script to find any version of adobe other than a specific version

i need to take and query a list of computers using psexec or powershell to do the following.
1) find if version of adobe is greater than 9.40
2) if version is greater then silently uninstall program
3) install version 9.4 silently

$SoftwareKey = "HKLM:\Software" 
if ((Get-WmiObject Win32_OperatingSystem).OSArchitecture -match "64-bit") { $SoftwareKey = "HKLM:\Software\WOW6432Node" } 

if (Test-Path "$SoftwareKey\adobe\Acrobat Reader") { 
$adobeversion = get-childitem "$SoftwareKey\adobe\Acrobat Reader" 
foreach ($version in $adobeversion) { 
Write-Output "Found verstion $($version.PSChildName) of Adobe Reader" 
} 

if ($version.PSCHILDNAME > 9.4) {
 #then uninstall the software
 # and install new software via uploaded exe
   
}

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i think maybe generating a list first of who has it and and then maybe running a uninstall install against that list?  Help please?

here a batch script i came up with but obviously i can't get it to work.

@echo off
setlocal
set CheckVersion=9.4.0
echo Checking Flash against version %CheckVersion% ...
for /f "tokens=3" %%a in ('reg query "HKEY_LOCAL_MACHINE\SOFTWARE\adobe\Acrobat Reader" /v Version 2^>NUL ^| find /i "Version"') do set DisplayVersion=%%a
echo Adobe Reader version: %DisplayVersion%; 
if "%DisplayVersion%"=="%CheckVersion%" (
  echo ... location has correct version ...
  goto :eof
)

echo Please wait while installing the new version ...
start "" /wait "c:\tempdir\adobeinstall.exe" /sAll
echo Done.

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